In technology, the hot jobs aren’t always in starting an internet company from scratch or designing the slimmest laptop, reports the Chicago Tribune: In mainframe computing, an almost-forgotten corner of corporate information technology departments, demand is growing for a new generation of professionals who can manage these complex systems. Computer scientists say mainframes, the machines housed in hulking metal boxes that store and process massive amounts of data for organizations, are unfairly regarded as historical curiosities when they in fact remain vital to corporations. As the Baby Boomers who set up these systems begin retiring, companies are searching for new graduates with mainframe computing skills. This demand marks an opportunity for students who are entering an uncertain economy with a rising unemployment rate…